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Volume 20
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10.3390/molecules201219812
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Article

Nanocasting of Periodic Mesoporous Materials as an Effective Strategy to Prepare Mixed Phases of Titania

by
Luther Mahoney
,
Shivatharsiny Rasalingam
,
Chia-Ming Wu
and
Ranjit T. Koodali
*
Department of Chemistry, University of South Dakota, 414 E. Clark Street, Vermillion, 57069 SD, USA
*
Author to whom correspondence should be addressed.
Molecules 2015, 20(12), 21881-21895; https://doi.org/10.3390/molecules201219812
Submission received: 17 November 2015 / Revised: 1 December 2015 / Accepted: 3 December 2015 / Published: 8 December 2015
(This article belongs to the Special Issue Nano-Structural Photocatalytic Materials: Synthesis, Characterization and Applications)
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Abstract

Mesoporous titanium dioxide materials were prepared using a nanocasting technique involving silica SBA-15 as the hard-template. At an optimal loading of titanium precursor, the hexagonal periodic array of pores in SBA-15 was retained. The phases of titanium dioxide could be easily varied by the number of impregnation cycles and the nature of titanium alkoxide employed. Low number of impregnation cycles produced mixed phases of anatase and TiO2(B). The mesoporous TiO2 materials were tested for solar hydrogen production, and the material consisting of 98% anatase and 2% TiO2(B) exhibited the highest yield of hydrogen from the photocatalytic splitting of water. The periodicity of the pores was an important factor that influenced the photocatalytic activity. This study indicates that mixed phases of titania containing ordered array of pores can be prepared by using the nanocasting strategy.
Keywords: nanocasting; hard-template; titanium dioxide; TiO2; mesoporous; periodic; hexagonal; TiO2(B); hydrogen production; water-splitting nanocasting; hard-template; titanium dioxide; TiO2; mesoporous; periodic; hexagonal; TiO2(B); hydrogen production; water-splitting

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MDPI and ACS Style

Mahoney, L.; Rasalingam, S.; Wu, C.-M.; Koodali, R.T. Nanocasting of Periodic Mesoporous Materials as an Effective Strategy to Prepare Mixed Phases of Titania. Molecules 2015, 20, 21881-21895. https://doi.org/10.3390/molecules201219812

AMA Style

Mahoney L, Rasalingam S, Wu C-M, Koodali RT. Nanocasting of Periodic Mesoporous Materials as an Effective Strategy to Prepare Mixed Phases of Titania. Molecules. 2015; 20(12):21881-21895. https://doi.org/10.3390/molecules201219812

Chicago/Turabian Style

Mahoney, Luther, Shivatharsiny Rasalingam, Chia-Ming Wu, and Ranjit T. Koodali. 2015. "Nanocasting of Periodic Mesoporous Materials as an Effective Strategy to Prepare Mixed Phases of Titania" Molecules 20, no. 12: 21881-21895. https://doi.org/10.3390/molecules201219812

APA Style

Mahoney, L., Rasalingam, S., Wu, C.-M., & Koodali, R. T. (2015). Nanocasting of Periodic Mesoporous Materials as an Effective Strategy to Prepare Mixed Phases of Titania. Molecules, 20(12), 21881-21895. https://doi.org/10.3390/molecules201219812

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